1521 – Three men of the Radical Reformation arrived in Wittenberg, Saxony, and caused an unrest that required the release of Martin Luther from custody to quell.
1831 – Aboard HMS Beagle, Charles Darwin (pictured) left Plymouth, England, on what became a historic expedition to South America that made his name as a naturalist.
1922 – The Imperial Japanese Navy commissioned Hōshō, the world’s first purpose-built aircraft carrier.
1997 – Loyalist Volunteer Force leader Billy Wright was assassinated in the HM Prison Maze by members of the Irish National Liberation Army.
2007 – Riots erupted in Mombasa, Kenya, after Mwai Kibaki was declared the winner of the presidential election—the first event in a political, economic, and humanitarian crisis.